Planoohaph co



R. RAU.

ECONOMIZEH ARRANGEMENT FOR LOCOMOTIVES.

APPLICATION FILED JAN. 6. 1919.

1,308,808. Patented July 8, 1919.

2 SHEETS-SHEEP]. F119. L w d Inventor.

R. RAU.

ECONOMIZER ARRANGEMENT FOR LOCOMOTIVES.

APPLICATION FILED JAN. 6. .1919.

1,308,808. Patented July 8, 1919.

2 SHEETS-SHEET 2. Fig. 2 K I L Hg. 5

Inventor.

'mu COLUMBIA PLANOGIAPM c0.. WASHINGTON, D. c.

RODOLPHE RAU, OF GENEVA, $WITZERLAND.

ECONOMIZER ARRANGEMENT FOR LOCOMOTIVES.

To all whom it may concern:

-Be it known that I, RonoLrHE RAU, citizen of Switzerland, residing at Geneva, 53

Ghemin 'Moillebeau, in Switzerland, have imvented certam new and useful Improvements in or Relatlng' to Economlaer Arrangements for Locomotives; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The economizer for locomotives forming the subject of the present invention has for its-object to considerably dimimsh the fuel consumption in locomotlves. It comprlses 'five essential parts, viz: A an evaporative surface condenser, B a vacuum pump, a pumpfor the clrculation of condensation water, D a servo-motor with or without a dynamo and E a ventllator having a com- -ca1 tube serving to effect an induced draft.

The-invention is described hereinafter in detail with reference'to the accompanying '25 drawings which show diagrammatically by way of example two constructional forms of -econom1zer for locomotlves.

"Figure 1 is an elevation of an evaporative surface condenser installed on a wagon.

The suction pump and=the circulating pump are disposed in the chassis of the Wagon below the platform.

Fig. 2 is a cross section. Fig. 3 isa plan of the evaporatlve surface condenser and its tank collector.

' :Fig. 4 is a plan of the suction pump, the pump for water and the circulation of condensation the servomotor with its dynamo. Fig. 5 shows in elevation the draft 1nducer, the latter being disposed concentrically with the escape pipe.

Fig. 6 is a cross section and Fig. 7 a half plan of the draft inducer and the ventilator.

= Fig. 8 is an elevation of a modified form of draft-inducer which is disposed, for example in front of or behind the escape pipe and independently thereof. 2

Figs. 9. and 10. show in plan and elevation the arrangement of an economizer on a locomotive tender.

Referring to the drawings A. indicates the uevaporative surface condenser formed by the serpentine tubes of iron, F is an e'scape Specification of Letters Patent.

Patented July 8, 1919.

Application filed January 6, 1919'. swarm). 269,822.

steam distributer, G a collector for the condensed products, H the pipe communicating between the condenser and the vacuum pump. I is the escape pipe from the suction pump leading the condensed products into the collector tank N. C is the circulating pump, J the suction pipe taking Water from the bottom of the tank N. K is a pipe delivering water into the distributing tank L. M are tubes serving for the distribution of condensation Water to the serpentine tubes of the condenser. N is a tank collector for the condensation water. designa es the shutters which prevent the water from passing outside the tank N. D is a servo-n1otor comprising a steam turbine and a dynamo S.

E indicates the ventilator for the induced draft. P the conical tube of the air ejector concentrically disposed to the escape steam tube or pipe. Q is a three way valve. R is the escape steam pipe which leads to the collector F.'- In the modification T indicates the conical pipe for the induced draft arranged independently of the escape steam pipe and U the second funnel for this induced draft.

In Figs. and 6 the steam flows through the three way valve. One of the positions of this valve corresponds to the free escape of exhaust steam and the other to the path of the condensation. During the flow of the condensation water, the steam is delivered by the pipe R to the distributor F of the evaporative surface condenser. This escape tube passes, in locomotives of small dimensions above the boiler and in large locomotives it extends along the chassis as indicated in Fig. 6.

In its passage between the locomotive and the tender on the one hand, and the tender and the condenser way on the other hand, a metallic blower or a flexible tube is interposed in the escape pipe in such manner as to compensate for variations in length and in level.

The exhaust steam is delivered from the distributer F Figs. 1 and 3 into the serpentine tubes of the evaporative surface condenser A. These tubes are mounted above the tank collectorand rigidly connected by a metallic framework. The condensation water taken into the tank collector N by the circulating pump is returned to the reservoir or tank L, from which are supported a number of distributing tubes M split at their lower parts throughout theinlength. which tubes direct the condensation water.

in cascade on the serpentine tubes A;

The cooling of the condensation water is efiected by its partial evaporation in con tact with air and on account of a great speed of the latter whichspeed is induced by the speed of the train, thecooling-action becomes very intense.

The condensed vapor is drawn in by the ,pump B and-delivered through the tube I into the tank collector N. It serves there fore to hold the surplus .orexcess'watern Theoretically the weight of the-condensed vapor being equal to the weightiof the water evaporated, the only :lOSS of water will be that w-hich' results fromthe entrainment of a small quantity ofthis water by the air.

The suction pump B, the circulating.

pump C, the servo-motor D and its dynamo see Figs. 1, 2 and fare mounted on a base plate which is suspended below the wagon platform and integral with the' chassis .of the wagon. I

- In large locomotives the servo-motor will be a turbo alternator on the axiso'f which will be keyed a toothed wheel which by means of a chain drive actuates the shaft of :the centrifugal pump 0; on the free .end of the shaft of this :pump is keyed a crank. whichcontrols the beam or lover of the pump B, this latter being constructed to operate at a high speed.

The dynamo -S which is assembled with the servo-motor D provides theelectric energy for operating the electric ventilator E, see Figs. 6' and 7. This ventilator is installed on one of the platforms of the lowan supply pipe.

In the modification shown in Fig. 8, the conical tube T for the induced draft is quite independent of the exhaust :pipe to the atmosphere. It willbe placed, :inifront,1or behind the latter, but always axially of the exhaust pipe, in order to facilitate the cleaning of the boilertubes. The smoke box will in this case be provided with a second funnell The two funnels will have a commbn swingingorbalanced cover, which close one or the other funnel. r

In locomotives of moderate power, the

servo-motor will the. a small double Eacting steam engine, which will actuate the suction pump B, the circulating pump C and j theventilator E. These members may be grouped on twogangways or bridges on the locomotive "and the 'evaporative surface con- .denser will not be mounted on a special wagon, but will be installed on the tender, it may be on the water tank, or to right or left thereof.

Inltender or tank locomotives see Figs. 9 and 10 the evaporative surface condenser A is disposed on each side of the boiler and the servoanotor D the suction ,pump'B, -the "circulating pump O and the ventilator are groupedon two gangways or bridges to the left and right of the boiler, the circulating pump and the ventilator beinfg mounted on a common shaft which will ibe-controlled by the fly wheel of the servo-motor. Considering that the exhaust always takes place into the atmosphere at a-considerably high counter pressure, which counter pressure is necessary to cause the draft, working with condensation will present a very large economy .despite the energy which will be consumed on the one hand by the servomotor, the vacuum pump, the circulating pump and by the induced draft ventilator and the energy which on the other hand will be taken from the locomotive in orderto draw the condenser wagon. Iclaim: V

1. An economizer system for locomotives, comprising a condenser, a collector, means for forcing the water'of condensation to the collector, :means for distributing the water,

of condensation over the condenser, a ventilater for creating a drafts-through the locomotive stack, and-means forselectively causing the How of the exhaust steam through the stack or to thecondenser.

2. An economizer system for locomotives, comprising a condenser, a collector, means arranged beneath the condenser for forcing the water of condensation to the collector, means for distributing the water of condensation over the condenser, a ventilator for creating a draft through the locomotive stack, and means for selectively causing the flow of the exhaust steam through the stack orto the condenser. r

8. An economizersystem for locomotives, comprising acondenser, acollector, means for forcing the water of condensation tothe collector, means arranged beneath the con- -denser for distributing the water of condensation over the condenser, a ventilator for creating a draft through the locomotive stack,-and means for selectively causing the flow of the exhaust steam through the stack or to the condenser. 4. An economizer system for locomotlves, a condenser, :a collector, means for forcing the water of condensationtothe collector, means for distributing the Water of In testimony whereof I aflix my signature, condensation over the condenser, a ventilain presence of two Witnesses. .tor for creating a draft through the locomo- RODOLPHE RAU. tive stack, and a valve for selectively causing Witnesses:

5 the flow of the exhaust steam through the LOUIS H. MUNIER,

stack or to the condenser. J. DIRVONE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

